General Specifications
| Certificate | Manufacturer's (UKAS Optional1) | 
| Best Measurement Uncertainty (k=2) | ±0.006 °A / ±0.017 °Z | 
| Shelf Life | Infinite (Certify Regularly) | 
| Traceability: | ICUMSA / PTB | 
Optional Certification1
| Code | Description | 
| 90-803 | UKAS Certificate of Calibration for Quartz Control Plate at 589.44nm | 
| 90-805 | UKAS Certificate of Calibration for Quartz Control Plate at additional2 specified wavelength between 546-900nm | 
| 90-807 | Manufacturer’s certificate of calibration for Quartz Control Plate at additional2 specified wavelength between 300-545nm | 
1per wavelength, per plate.
2A UKAS Certificate of Calibration at 589.44nm is a minimum and must be ordered at the same time as any additional wavelength